Some of the best-loved British TV soap characters will make special appearances in other dramas as Coronation Street, EastEnders, Emmerdale, Casualty, Doctors, Holby City and Hollyoaks join forces to highlight climate change.
And for the first time ever, the soaps have all filmed scenes to discuss and cover aspects of climate change, ahead of the Cop26 climate summit.
Emmerdale’s executive producer Jane Hudson, who came up with the idea, said: “Never before have all five soaps and both continuing dramas come together and united in telling one story.
"And we certainly haven't seen characters pop up in other shows before. This is a real treat for our audience, whilst also allowing us to get across a very important message.”
Who will we see and where?
While details are being kept on the down-low, it has been confirmed that EastEnders viewers will see a Hollyoaks character in the fictional borough of Walford.
A social media video featuring two Emmerdale villagers will be shown to Coronation Street characters.
And someone from BBC One’s Doctors will appear on Coronation Street.
Casualty will also be discussed in The Woolpack, the pub featured in Emmerdale.
And a social media clip from Coronation Street's town Weatherfield will be discussed in the EastEnders' Queen Vic pub.
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The drama, which has taken many months of planning, begins on Monday, November 1, the week when world leaders meet to discuss the climate crisis at the Cop26 conference in Glasgow.
Kate Oates, head of continuing drama at BBC Studios, added: “I’m thrilled that our soaps and serial dramas have all come together to help highlight the issue of climate change amongst our millions of viewers.
"We’re grateful to the teams that made this happen, and hugely look forward to seeing the talent from our own shows popping up in other iconic programmes.”
Lucy Allan, Hollyoaks executive producer, said: “We know how important climate change and environmental issues are to our youthful audience, and to all soap viewers.
"It has been great to work together on an engaging way to, hopefully, inspire conversations about issues that are so important."